Gas-throttle control



s t. s. "1925.

A. H. BRINKMANN GAS- THROTTLE. CONTROL Filed March 25 Patented Sept. 8, 1925.

" UNITE n STATES PATENT OFFICE.

AUGUST H. BRINKMANN, F CATONSVILLE, MARYLAND.

GAS-THROTTLE CONTROL.

Application filed March 25, 1925. Serial No. 18,186. I

T 0 all 10/ 10171: it may concern:

Beit known that I, AUGUST II. BRINK- lWnNN, a citizen of the United States, residing at Catonsville, in the county of Baltimore and Stateo'f Maryland, have invented certain new and useful Improvements in Gas-Throttle Controls, of which the following is a specification.

The invention relates to devices for controlling throttle valves, with special reference to the gas throttle of an automobile.

It is an object of the invention to provide a device which will hold the throttle normally in position for idling of the motor, as automobile motors are usually set, and to provide means for allowing the throttle to entirely close under such conditions as are presented when a vehicle is running down hill and it is desired to utilize the braking power of the engine compression without waste of fuel.

Other objects of the invention will ap pear from the following description when read in connection with the accompanying drawing showing embodiments of the invention and wherein Fig. 1 is a detail diagrammatic side elevation of a vehicle partly broken away, showing one form of the device in place;

Fig. 2 is a plan View of a steering wheel and column showing the finger levers and an embodiment of the invention applied thereto;

Fig. 3 is a side elevation of a modified form of the device applied to the steering column Fig. 4 is a plan view of a still further modification; and

Fig. 5 is a side elevation partly broken away of a carburetor showing the throttle valve in the two positions provided by the invention.

As shown, a gas throttle valve is illustrated at 10, in position to allow the motor to idle, and is shown as controlled by the usual lever 11 and link 12, connected to the rod 13 to the top of which rod the finger lever 14 is connected. 1

The parts so far described are the usual parts upon many types of automobiles.

According to the invention, means are provided to hold the gas lever in a position separated from its stock 15, and when the mvention is applied to a. vehicle the butterfly throttle valveis set so that the motor will idle when the finger lever is thus held away from its stock and so that the throttle valve is entirely closed when the finger lever is in contact with the stock 15.

To hold the finger lever away from the stock to the adjusted idling position of the motor, there is shown in the form of Figs. 1 and 2 .a lever 16, pivoted between its ends at 17 and having a resilient means 18 to press the operating end of the lever down upon the finger lever arc 19.

When the machine is running with the parts in position, shown in Figs. 1 and 2, and a hill is to be descended, the operator may press upon the projecting end 20 of the lever 16 to lift the operating end thereof and allow the lever 14 to be pressed against the stop 15, in which position the throttle will be completely closed.

.lVhen the bottom of the hill tis japproached, a pull upon the lever 14 will cause the same to underride the operating end of the lever 16, which will then snap down behind the lever 14 and pressure of the finger lever against the end of the lever 16 will immediately automatically adjust the throttle to its idling position.

In the form of the invention shown in Fig. 3, a cam stop 21 is shown pivoted at 22, and spring-pressed to the position shown as by means of a spring 23. The stop carries a portion 24 which is bent out of the plane of the body of the stop 21 to project under the are 19 and limit the upward move ment of the stop under urge of the spring 23. The operation of this form of the in vention is similar to that already described.

The member 2.1 may be depressed to allow the finger lever 14 to pass to the dotted line position in Fig. 3 and manual retraction of the lever will depress the member 21 by cam action and after passage of the finger lever 14 it will be automatically returned to op erative position.

In Fig. 4 a form of the device is shown wherein a bell-crank 25 is pivoted at 26 to a member 27, which may be in the form of a clamp carried by the finger lever 14. Pressure upon the free end of the bell-crank will move the same to the dotted line position, thus allowing the finger lever 14 to move to contact with the stop 15, whereby to close the throttle valve. Manual retraction of the finger lever 14 will automatically cause the bell-crank to return to the full line position of Fig. 4, wherein its end 28 rests behind the stop 15 to hold the finger lever 14 in idling position.

Various embodiments of the invention illustrated may be constructed in the form of an auxiliary applicable to existing automobiles and may be readily applied thereto with proper adjustments of the butterfly valve, whereupon much fuel may be saved in descending hills, at the same time causing the engine to have a more eflicient braking effect, since the drive of the engine, when the gas is completely out ofi, is entirely from the Wheels of the vehicle.

Minor changes may be made in the physical embodiment of the invention within the scope of the appended claims without departing from the spirit of the invention.

I claim:

1. A gas throttle control, comprising in combination, a movable stop to position a throttle valve hand-control lever in idling position of the motor, a fixed stop to position said lever for full closure of the throttle, and cam means to move said first-named stop for passage of the lever, and spring means to restore said movable stop to position behind said lever after such movement.

'2. A gas throttle control, comprising in combination, a movable stop, means to pivotsaid stop adjacent the throttle valve handcontrol lever, means to resiliently press said stop into position to hold said lever in its idling position, a fixed stop against which said lever may be moved after movement of said movable stop about its pivot, in which last-named position the throttle will be fully closed, cam acting means whereby the movement of the lever to idling position will actuate said stop to permit such movement, and means to position said movable stop in its operative position after such cam movement.

AUGUST H. BRINKMANN. 

